"We've had some amazing results from all of our players; I think the depth, particularly in the females, is unreal."

Barty has won her past 11 Fed Cup fixtures across singles and doubles and says she's in career best form.

"It (Miami) was one of the best weeks of my career; I struck the ball better than ever," she said.

"But it's different conditions, different ball, different country, different everything (in Brisbane)."

Seven-time winners Australia hold home court advantage but won't have it easy against last year's finalists, who boast two-time Australian Open champion Victoria Azarenka and world No.10 Aryna Sabalenka.

Azarenka is Barty's current doubles partner but is not yet in Brisbane for Saturday's two singles rubbers.

"She's a great chick," Barty said of the former world No.1 Azarenka.

"We'll park the friendship if she's on the other side of the net, but outside the court the relationship doesn't change."

Australia will play either France or Romania at home in November's final if they defeat Belarus.